.digit {
    width: 120px;
    height: 200px;
    margin: 0 5px;
    position: relative;
    display: inline-block;
}
.digit .segment {
    background: #c00;
    border-radius: 5px;
    position: absolute;
    opacity: 0.15;
    transition: opacity 0.2s;
    -webkit-transition: opacity 0.2s;
    -ms-transition: opacity 0.2s;
    -moz-transition: opacity 0.2s;
    -o-transition: opacity 0.2s;
}
.digit .segment.on, .separator {
    opacity: 1;
    box-shadow: 0 0 50px rgba(255, 0, 0, 0.7);
    transition: opacity 0s;
    -webkit-transition: opacity 0s;
    -ms-transition: opacity 0s;
    -moz-transition: opacity 0s;
    -o-transition: opacity 0s;
}
.digit .segment:nth-child(1) {
    top: 10px;
    left: 20px;
    right: 20px;
    height: 10px;
}
.digit .segment:nth-child(2) {
    top: 20px;
    right: 10px;
    width: 10px;
    height: 75px;
    height: calc(50% - 25px);
}
.digit .segment:nth-child(3) {
    bottom: 20px;
    right: 10px;
    width: 10px;
    height: 75px;
    height: calc(50% - 25px);
}
.digit .segment:nth-child(4) {
    bottom: 10px;
    right: 20px;
    height: 10px;
    left: 20px;
}
.digit .segment:nth-child(5) {
    bottom: 20px;
    left: 10px;
    width: 10px;
    height: 75px;
    height: calc(50% - 25px);
}
.digit .segment:nth-child(6) {
    top: 20px;
    left: 10px;
    width: 10px;
    height: 75px;
    height: calc(50% - 25px);
}
.digit .segment:nth-child(7) {
    bottom: 95px;
    bottom: calc(50% - 5px);
    right: 20px;
    left: 20px;
    height: 10px;
}
